diff mbox

[PULL,7/8] target/mips: Drop redundant gen_io_start/stop()

Message ID 1501771515-22847-8-git-send-email-yongbok.kim@imgtec.com (mailing list archive)
State New, archived
Headers show

Commit Message

Yongbok Kim Aug. 3, 2017, 2:45 p.m. UTC 
From: James Hogan <james.hogan@imgtec.com>

DMTC0 CP0_Cause does a redundant gen_io_start() and gen_io_end() pair,
even though this is done for all DMTC0 operations outside of the switch
statement. Remove these redundant calls.

Fixes: 5dc5d9f055c5 ("mips: more fixes to the MIPS interrupt glue logic")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Yongbok Kim <yongbok.kim@imgtec.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
---
 target/mips/translate.c | 8 --------
 1 file changed, 8 deletions(-)
diff mbox

Patch

diff --git a/target/mips/translate.c b/target/mips/translate.c
index ba6b8f5..bcea2a1 100644
--- a/target/mips/translate.c
+++ b/target/mips/translate.c
@@ -7401,15 +7401,7 @@  static void gen_dmtc0(DisasContext *ctx, TCGv arg, int reg, int sel)
         switch (sel) {
         case 0:
             save_cpu_state(ctx, 1);
-            /* Mark as an IO operation because we may trigger a software
-               interrupt.  */
-            if (ctx->tb->cflags & CF_USE_ICOUNT) {
-                gen_io_start();
-            }
             gen_helper_mtc0_cause(cpu_env, arg);
-            if (ctx->tb->cflags & CF_USE_ICOUNT) {
-                gen_io_end();
-            }
             /* Stop translation as we may have triggered an intetrupt. BS_STOP
              * isn't sufficient, we need to ensure we break out of translated
              * code to check for pending interrupts.  */